The genus Doodia belongs to the family of the Blechnaceae and includes about 10 species, native to the northern hemisphere, most of them to Australia and New Zealand. The different species are difficult to distinguish from each other. Fronds are once-pinnate, lanceolate, rough to the touch, monomorphic. Young fronds appear deep pink maturing to dark green. Sori are arranged in rows on every side of pinnae midribs. The sori tracks are clearly visible on the upper pinnae surface.